Hybrid Transparent PEDOT:PSS Molybdenum Oxide Battery-like Supercapacitors

Mitra Yoonessi, Arie Borenstein, Maher F. El-Kady, Christopher L. Turner, Haosen Wang, Adam Z. Stieg, Laurent Pilon

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

We report fabrication of flexible all-solid-state transparent electrochromic patterned microsupercapacitors based on two-dimensional layered nanostructured molybdenum oxide (MoO3-x)/poly(3,4-ethylenedioxythiophene)-polystyrenesulfonate (PEDOT:PSS) nanocomposite electrodes. Exceptional electrochemical performance of the transparent microsupercapacitors includes fast kinetics and response times, high specific capacitances (up to 79.2 C/g, 99 F/g, and 2.99 mF/cm2), and Coulombic efficiencies of 99.7% over 2500 cycles. Such exceptional performance is attributed to the synergistic effects of PEDOT:PSS providing high electrical conductivity and high charge storage capacity along with its segregated interfacial nanostructure facilitating the intercalation of the ionic species, H+(Na+, K+) and SO4 2-, into the high surface area tunnel structure of the 2D MoO3-x nanosheets. Supercapacitors using MoO3-x PEDOT:PSS electrodes exhibit optical transmittance above 70% (λ = 380-730 nm).

Original languageEnglish
Pages (from-to)4629-4639
Number of pages11
JournalACS Applied Energy Materials
Volume2
Issue number7
DOIs
StatePublished - 22 Jul 2019
Externally publishedYes

Keywords

  • 2D materials
  • PEDOT:PSS
  • electrochromic
  • molybdenum oxide nanoparticles
  • nanocomposite electrode
  • transparent supercapacitor

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